CN108258743A - Unified high electric power and low power battery charger - Google Patents
Unified high electric power and low power battery charger Download PDFInfo
- Publication number
- CN108258743A CN108258743A CN201611239954.3A CN201611239954A CN108258743A CN 108258743 A CN108258743 A CN 108258743A CN 201611239954 A CN201611239954 A CN 201611239954A CN 108258743 A CN108258743 A CN 108258743A
- Authority
- CN
- China
- Prior art keywords
- battery
- single battery
- voltage
- module
- voltage value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005669 field effect Effects 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims 1
- 238000004880 explosion Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H02J7/0021—
-
- H02J7/0026—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of unified high electric power and low power battery charger, including voltage acquisition module, for acquiring the voltage value that single battery is often saved in battery pack；Voltage operational module, the voltage value of often section single battery for voltage acquisition module to be exported compares respectively with preset overvoltage threshold, when the voltage value of certain section single battery is more than preset overvoltage threshold, then a drive signal for corresponding to the section single battery is exported；Balance charge/discharge module, it is made of several control units, the positive and negative anodes with each section single battery in battery pack are connected respectively, when the drive signal for receiving over-pressed computing module output, which drives corresponding control unit to control its corresponding single battery electric discharge until the voltage value of the section single battery is equal to preset overvoltage threshold.The present invention makes battery be not in overcharge expansion, explosion and cross to put failure, so as to greatly enhance safety and the useful life of battery.
Description
Technical field
Protection circuit more particularly to a kind of comprehensive control management electricity for battery pack the present invention relates to rechargeable battery
Road.
Background technology
Power recharge battery needs several section Li-Ion rechargeable batteries being together in series mostly when in use, has reached required
The sufficiently large voltage wanted goes the running of drive motor；Such as electric bicycle, electric vehicle etc.；Since lithium ion battery is each
Monomer can not possibly be completely the same in performance indicator, in use due to the difference of capacity, the self discharge between each monomer etc.
Different, after used a period of time, the retention of charge of battery pack is substantially reduced, and is affected it and is further promoted the use of；
Therefore, when more piece rechargeable battery is used in series, the quality of performance depends not only on the quality of single battery, additionally depends on
The performance of battery pack entirety；Existing multiple battery management system currently on the market, normally referred to as BMS or protection board, but this
A little BMS protection boards do not have this balanced function without the ability of equalization or even all substantially, only play one to internal battery pack situation
A monitoring can not control effectively and manage to power battery super-charge super-discharge.
Invention content
The problems in for the above-mentioned prior art, preferably solve internal battery pack the purpose of the present invention is to provide a kind of
When single battery core consistency is very poor how the safe and reliable good battery pack of management, battery is made not occur overcharging expansion or quick-fried
It is fried.
In order to solve the above technical problems, the present invention provides a kind of unified high electric power and low power battery charger, it is single
Batteries voltage acquisition module, for acquiring the voltage value that single battery is often saved in the battery pack；
Voltage comparison module, for by the voltage acquisition module export often section single battery voltage value respectively with it is preset
Overvoltage threshold compares, and when the voltage value of certain section single battery is above or below preset overvoltage threshold, then output one is right
Should in the section single battery drive signal to balance charge/discharge module；
Balance charge/discharge module is made of several control units, respectively with the positive and negative anodes of each section single battery in battery pack
It is connected, when the drive signal for receiving the voltage comparison module block output, which drives corresponding control unit
Its corresponding single battery charge and discharge is controlled to be equal to preset overvoltage threshold until the voltage value of the section single battery；The equilibrium
The control unit of discharge module is made of field-effect tube, and the source electrode of field-effect tube passes through high-power resistance and single battery
One pole connects, and the drain electrode of field-effect tube directly connects with another pole of the single battery；The grid of field-effect tube passes through an electricity
Resistance is connected with the over-pressed computing module, for receiving the drive signal of over-pressed computing module output.
The unified high electric power and low power battery charger can also include：Under-voltage computing module, for by the electricity
The voltage value of often section single battery of acquisition module output is pressed respectively compared with preset brownout threshold, when certain section single battery
Voltage value be less than preset brownout threshold when, then export one correspond to the section single battery drive signal；Undervoltage warning
Module, the drive signal for being exported according to the under-voltage computing module are alarmed.
Specifically, the undervoltage alarm module is made of several LED light, and each LED light is corresponded in the battery pack
One single battery, the drive signal of the under-voltage computing module output drive corresponding LED light to shine to show corresponding monomer
Battery is under-voltage.
Since the present invention utilizes balance charge/discharge module to help charge the single battery electric discharge of overvoltage or under-voltage monomer electricity
It charges in pond so that battery does not occur overcharging expansion or explosion, the good battery pack of management that can be more safe and reliable.
Description of the drawings
Attached drawing 1 is a kind of structure of unified high electric power and low power battery charger of the invention in one embodiment
Figure；
Attached drawing 2 is a kind of detailed circuit of unified high electric power and low power battery charger of the invention in one embodiment
Figure.
Specific embodiment
With reference to figure 1, a kind of unified high electric power of the invention and low power battery charger are used for by more piece monomer
The Comprehensive Control of battery pack 1 that battery is connected in series, the circuit include：
Voltage acquisition module 2, for acquiring the voltage value that single battery is often saved in the battery pack 1；It is connected in battery pack
The positive and negative anodes of each single battery to detect the current voltage value of each single battery, to connect N number of single battery, then have N+
1 conducting wire is connected to voltage acquisition module,
Voltage operational module 7, for the voltage value of often section single battery that exports the voltage acquisition module respectively with it is default
Overvoltage threshold compare, when certain section single battery voltage value be more than preset overvoltage threshold when or it is under-voltage when, then export one
A drive signal corresponding to the section single battery is to balanced discharge module or charging module；
Balance charge/discharge module 4 is made of several control units, respectively with the positive and negative anodes of each section single battery in battery pack
It is connected, when the drive signal for receiving the voltage operational module output, which drives corresponding control unit control
It makes its corresponding single battery electric discharge or charges until the voltage value of the section single battery is equal to preset overvoltage threshold.Specifically
Ground, the control unit of balanced discharge module are realized that the source electrode of field-effect tube passes through high-power resistance and one by field-effect tube
One pole of single battery connects, and drain electrode directly connects with another pole of the single battery；The grid of field-effect tube passes through an electricity
Resistance is connected with the over-pressed computing module, for receiving the drive signal of over-pressed computing module output.
The method have the characteristics that the ability of equalization is big, it is consistent with charging current by-pass current can be reached.Utilize metal-oxide-semiconductor
Low on-resistance characteristic is as equalizer switch device, additional high-power resistance（It determines euqalizing current size）To realize balanced point
Stream.
The unified high electric power and low power battery charger can also include：Undervoltage alarm module 6, for according to
The drive signal of under-voltage computing module output is alarmed.Specifically, undervoltage alarm module can be made of several LED light,
Each LED light corresponds to a single battery in the battery pack, the drive signal driving pair of the under-voltage computing module output
The LED light answered shines to show that corresponding single battery is under-voltage.It can certainly be with other equipment with warning effect come real
Existing undervoltage warning.
With reference to figure 2, by the lithium battery group of four series connection into rechargeable battery set for；Voltage acquisition module 2 is acquired from battery pack
Voltage signal, voltage acquisition module 2 are connect with the over-pressed computing module 3 in voltage operational module 7 and under-voltage computing module 5, mistake
Pressure computing module 3 gives the control unit 41 being made of field-effect tube Q1, Q2, Q3, Q4 to provide driving through resistance R1, R2, R3, R4
Signal.Wherein R1, Q1 and R9 form a control unit and Balance route are carried out to No. 1 battery, and R2, Q2 and R10 form a control
Unit processed carries out No. 2 batteries Balance route, and R3, Q3 and R11 form a control unit and carry out Balance route to No. 3 batteries,
R4, Q4 and R12 form a control unit and carry out Balance route to No. 4 batteries；The wherein S poles of metal-oxide-semiconductor Q1 meet power resistor R9
One end, the "-" pole of No. 1 battery of another termination of R9 namely the "+" pole of No. 2 batteries, the D poles of Q1 connects the "+" pole of No. 1 battery,
The S poles of metal-oxide-semiconductor Q2 connect one end of power resistor R10, the "-" pole of No. 2 batteries of another termination of R10 namely the "+" of No. 3 batteries
Pole, the D poles of Q2 connect the "-" pole of No. 1 battery of battery namely the "+" pole of No. 2 batteries, the S poles of MOS pipes Q3 and connect power resistor
One end of R11, the "-" pole of No. 3 batteries of another termination battery of R11 namely the "+" pole of No. 4 batteries, the D poles of Q3 connect battery 2
The "-" pole of battery namely the "+" pole of No. 3 batteries, the S poles of metal-oxide-semiconductor Q4 connect one end of power resistor R12, another termination electricity of R12
The "-" pole of the battery of pond 4, the D poles of Q4 connect the "-" pole of No. 3 batteries of battery namely the "+" pole of No. 4 batteries.
Described metal-oxide-semiconductor Q1, Q2, Q3, Q4 are respectively used to on-off action, for example, when in No. 1 single battery charging process its two
When terminal voltage is more than certain voltage value, over-pressed computing module exports a drive signal to resistance R1 and is transmitted to when detecting
The G poles of Q1, metal-oxide-semiconductor Q1 conducting short-circuit power resistance R9 discharge for No. 1 single battery, the power resistor R9, R10, R11,
R12 plays euqalizing current size adjustment effect, and the smaller euqalizing current of resistance value is bigger, and resistance value is bigger, and euqalizing current is smaller.By
The undervoltage alarm module 61 of LED1, LED2, LED3, LED4 composition is respectively used to batteries monomer battery and alarms when under-voltage
Instruction；Such as when No. 1 single battery is under-voltage, then LED1 will shine and alarm.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (5)
1. a kind of unified high electric power and low power battery charger, which is characterized in that including：Single battery voltage acquisition mould
Block, voltage comparison module, balance charge/discharge module.
2. a kind of unified high electric power as described in claim 1 and low power battery charger, which is characterized in that single battery
Voltage acquisition module, for acquiring the voltage value that single battery is often saved in the battery pack.
3. a kind of unified high electric power as described in claim 1 and low power battery charger, which is characterized in that voltage compares
Module, for the voltage value of often section single battery that exports the voltage acquisition module respectively compared with preset overvoltage threshold
Compared with when the voltage value of certain section single battery is above or below preset overvoltage threshold, then output one corresponds to the section monomer
The drive signal of battery is to balance charge/discharge module.
4. a kind of unified high electric power as described in claim 1 and low power battery charger, which is characterized in that balanced charge and discharge
Electric module is made of several control units, and the positive and negative anodes with each section single battery in battery pack are connected respectively, when receiving
During the drive signal of the voltage comparison module block output, which drives corresponding control unit to control its corresponding list
Body battery charging and discharging is equal to preset overvoltage threshold until the voltage value of the section single battery；The control of the balanced discharge module
Unit is made of field-effect tube, and the source electrode of field-effect tube is connected by high-power resistance with a pole of a single battery, field effect
Should the drain electrode of pipe directly connect with another pole of the single battery；The grid of field-effect tube is transported by a resistance and the overvoltage
It calculates module to be connected, for receiving the drive signal of over-pressed computing module output.
5. unified high electric power as described in claim 1 and low power battery charger, it is characterised in that：The voltage compares
Module further includes over voltage alarm module and is made of several LED light, and each LED light corresponds to a list in the battery pack
Body battery, the drive signal of the under-voltage computing module output drive corresponding LED light to shine to have shown corresponding single battery
It is under-voltage or over-pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611239954.3A CN108258743A (en) | 2016-12-29 | 2016-12-29 | Unified high electric power and low power battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611239954.3A CN108258743A (en) | 2016-12-29 | 2016-12-29 | Unified high electric power and low power battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108258743A true CN108258743A (en) | 2018-07-06 |
Family
ID=62719836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611239954.3A Pending CN108258743A (en) | 2016-12-29 | 2016-12-29 | Unified high electric power and low power battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108258743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980609A (en) * | 2019-03-29 | 2019-07-05 | 江苏原容新能源科技有限公司 | Battery under-voltage protection method and system based on BMS |
-
2016
- 2016-12-29 CN CN201611239954.3A patent/CN108258743A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980609A (en) * | 2019-03-29 | 2019-07-05 | 江苏原容新能源科技有限公司 | Battery under-voltage protection method and system based on BMS |
| CN109980609B (en) * | 2019-03-29 | 2021-05-18 | 江苏赣锋动力科技有限公司 | Battery under-voltage protection method and system based on BMS |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102709980B (en) | A kind of serial lithium battery group baffle based on battery protection chip | |
| CN203466559U (en) | Lithium battery charging and discharging protection circuit | |
| CN104064827B (en) | Nickel-metal hydride battery pack with safety protection system | |
| CN106080252B (en) | A kind of batteries of electric automobile group equalization methods | |
| CN102593795B (en) | Go here and there high-power lithium battery control panel more | |
| CN106026244B (en) | Lithium ion battery charge-discharge protection circuit and lithium-ion battery systems | |
| CN201594570U (en) | Rechargeable battery equalization management system | |
| CN2922235Y (en) | Power lithium ion cell protecting circuit | |
| CN103915875A (en) | Lithium battery charging and discharging control system for novel solar street lamp | |
| CN2922234Y (en) | Over-discharge protecting circuit for power lithium ion cell | |
| CN108258743A (en) | Unified high electric power and low power battery charger | |
| CN104659830A (en) | Novel intelligent charger | |
| CN2938522Y (en) | Overload protection circuit of power lithium ion battery | |
| CN111181224A (en) | Charging system for multi-section series battery pack and charging method thereof | |
| CN206259456U (en) | A kind of novel battery bag with communication function | |
| CN108206554A (en) | Band torch function power lights are double to fill onboard charger | |
| CN205407296U (en) | Complementary equalizer circuit of group battery | |
| CN201667376U (en) | Intelligent battery pack with precharge function | |
| CN106816902A (en) | Capacitor charger system and digital control module | |
| CN106887871A (en) | Can record and show the battery charger of charge volume | |
| CN107546791A (en) | Capacitor charger system and digital control module | |
| CN107769288A (en) | Capacitor charger system | |
| CN207381994U (en) | Twin-core module samples the sampling charging circuit of harness and on-vehicle battery | |
| CN106877456B (en) | Electric vehicle power supply system | |
| CN205986244U (en) | On -vehicle intelligent back -up source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180706 |